From an April 1st release:
MPD Moves CCTV Camera to 6th and I Streets, NW
Chief of Police Cathy L. Lanier announced today the Metropolitan Police Department (MPD) has relocated a Closed Circuit Television (CCTV) camera from the unit block of K Street, NW to the 600 block of I St, NW. The camera is among 75 neighborhood crime cameras in the District.
The primary goal of the CCTV system is to enhance the safety and security of residents, workers and visitors in the District of Columbia, while vigorously respecting the privacy rights of individuals.
I believe this location is nearby the site of multiple past muggings of Chinatown store owners.